X-Recipient:	archive-cygwin AT delorie DOT com
X-Spam-Check-By:	sourceware.org
Date:	Sun, 30 Jan 2011 23:12:19 +0100
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Issue with socket SO_REUSEADDR when a client is connected.
Message-ID:	<20110130221219.GH1057@calimero.vinschen.de>
Reply-To:	cygwin AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
References:	<AANLkTi=HunjC3MPZo37xZ8Yd1Mh1329yD5sQDfaNJWG9 AT mail DOT gmail DOT com>
MIME-Version:	1.0
In-Reply-To:	<AANLkTi=HunjC3MPZo37xZ8Yd1Mh1329yD5sQDfaNJWG9@mail.gmail.com>
User-Agent:	Mutt/1.5.21 (2010-09-15)
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Unsubscribe:	<mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com

On Jan 30 15:31, jdzstz - gmail dot com wrote:
> I have detected an issue in windows xp with socket SO_REUSEADDR when a
> tcp client keeps connected forever.
> 
> I don't know if it is a cygwin bug or a problem with microsoft winsock
> implementation. I don't know if windows vista or windows 7 has the
> same behaviour.

Thanks for the testcase.

I was going to go to great lengths explaining how WinSock has a bug in
SO_REUSEADDR behaviour and how Cygwin has a nifty workaround for this,
but I got a bad feeling while writing my reply and started a cycle

  1. test
  2. read MSDN
  3. scratch head
  4. debug
  5. change
  6. goto 1

The Cygwin workaround to fix the WinSock SO_REUSEADDR behaviour from
back in 2006 was not so nifty after all.  I just fixed that in CVS.  I'm
going to generate a new developer snapshot right now.  Should be up in a
couple of minutes.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -